If he's inside of me "there," he'd damn well better cum!
is part of a discussion in the General Sex Discussion forum that includes topics on Everything you wanted to know about sex but were afraid to ask. Everything sex goes here!.
No problem at all! If you both like and want it then go do it! About the porn movies - there is many of them with cum inside ass not outside but if you agree with me the most porn movies emphasize on the sperm that the viewers must see!
I think using porn movies as an example of how to lead your sex life is something that can lead to problems. I can usually tell with guys that are too influenced by porn and I tend to avoid them.
As for finishing in someones bum, well unless you produce loads of semen generally speaking it should be absorbed pretty quickly.
If theres something oozing out of your bum 5 hours after you let the guy finish there? well I think you need to double check just exactly what it is because I'm pretty certain it's not semen.